Inflammatory pouch disease: The spectrum of pouchitis

Table 3 The pouchitis disease activity index

Criteria	Score
Clinical
Stool frequency
Usual postoperative stool frequency	0
1-2 stool⁄d > postoperative usual	1
3 or more stool⁄d > postoperative usual	2
Rectal bleeding
None or rare	0
Present daily	1
Fecal urgency or abdominal cramps
None	0
Occasional	1
Usual	2
Fever (temperature > 37.8 °C)
Absent	0
Present	1
Endoscopic findings
Edema	1
Granularity	1
Friability	1
Loss of vascular pattern	1
Mucous exudates	1
Ulceration	1
Histological findings - acute histological inflammation
Polymorphonuclear leucocyte infiltration
Mild	1
Moderate without crypt abscess	2
Severe with crypt abscess	3
Ulceration per low-power field (mean)
< 25%/25%-50%/> 50%	1/2/3
Total pouchitis disease activity index (max 18) pouchitis ≥ 7